<h2 mat-dialog-title>
  確認新增
</h2>

<mat-dialog-content>
  確定要新增這篇文章？(標題：{{ title}})
</mat-dialog-content>

<mat-dialog-actions>
  <button mat-button color="primary" (click)="confirm()">確認</button>
  <button mat-button mat-dialog-close color="warn">取消</button>
</mat-dialog-actions>
